CN114844858A - Method for obtaining domain name address by multiple networks - Google Patents
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- CN114844858A CN114844858A CN202210381492.8A CN202210381492A CN114844858A CN 114844858 A CN114844858 A CN 114844858A CN 202210381492 A CN202210381492 A CN 202210381492A CN 114844858 A CN114844858 A CN 114844858A
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Abstract
A method for obtaining domain name addresses by multiple networks is characterized in that DNS server addresses corresponding to multiple networks are reasonably scheduled, and corresponding routing rules are matched, so that the successful probability of domain name query can be greatly increased, a user can more conveniently access network services under the condition of multiple networks, and the use efficiency of a user terminal is greatly improved.
Description
Technical Field
The invention relates to the field of computer networks, in particular to a method for acquiring domain name addresses by multiple networks.
Background
The Domain Name System (DNS) is a service of the internet. It acts as a distributed database that maps domain names and IP addresses to each other, enabling people to more conveniently access the internet. When a terminal device accesses a domain name, firstly, the domain name is inquired for a DNS server bound by a network card device of the terminal device, and an IP address corresponding to the domain name is directly connected after the IP address is obtained. The DNS technology greatly simplifies the mode of using the Internet by people and promotes the development of the Internet.
The technology works well in a single network, but under the condition of multiple networks, a plurality of network card devices exist, and each network card device is bound with a DNS server, so that the problem exists. According to the own scoring rule, the operating system uses the DNS server of one network card device with the highest priority to perform domain name address query, and the DNS servers of other network card devices with lower priorities are not used. Some domain names that can only be resolved at a particular DNS server cannot be resolved resulting in the corresponding domain name being inaccessible.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides a method for acquiring domain name addresses under the condition of multiple networks, and the method for fully scheduling a DNS server using multiple network card devices to perform domain name query.
The technical scheme adopted by the invention for overcoming the technical problems is as follows:
a method for acquiring domain name addresses by multiple networks comprises the following steps:
a) establishing a DNS server address buffer pool;
b) monitoring the change of the DNS server address of each equipment network card in the Internet, and updating a DNS server address buffer pool according to the change of the DNS server address of each network card;
c) setting a routing rule according to the updated DNS server address;
d) and each device in the Internet uses a new scheduling mode to perform DNS query.
Further, step b) comprises the following steps:
b-1) scanning the address of a network card DNS server of each device in the Internet;
b-2) monitoring the address change of each network card DNS server;
b-3) directly adding the DNS server address of the network card with the DNS server address into the DNS server address buffer pool before the DNS server address buffer pool is established;
b-4) adding a network card of the DNS address after the DNS address buffer pool is established, and adding the newly added DNS address into the DNS address buffer pool;
b-5) after the DNS server address buffer pool is established, the network card of the DNS server address is changed, and after the corresponding old DNS server address is deleted, the new DNS server address is added into the DNS server address buffer pool;
b-6) deleting the network card of the DNS address after the DNS address buffer pool is established, and deleting the corresponding DNS address from the DNS address buffer pool.
Further, step c) comprises the steps of:
c-1) setting routing rules of DNS server addresses added into the DNS server address buffer pool, so that the communication between the equipment and the DNS server addresses is carried out along the original network card path of the equipment;
c-2) deleting the routing rule corresponding to the deleted DNS server address in the DNS server address buffer pool.
Further, step d) comprises the following steps:
d-1) the equipment uses the address of the DNS server address buffer pool to perform domain name inquiry;
d-2) if the current DNS server address in the DNS server address buffer pool is abnormal during domain name query, sequentially using the next DNS server address in the DNS server address buffer pool to perform domain name query until the equipment acquires the domain name IP address.
Preferably, the DNS server address buffer pool in step a) is established earlier or later than the first network connection.
Preferably, the network card in step b) is a physical network card or a virtual network card.
Preferably, the exception in step d-2) is that no connection is available or the DNS server address is not queried.
The invention has the beneficial effects that: by reasonably scheduling DNS server addresses corresponding to a plurality of networks and matching with corresponding routing rules, the success rate of domain name query can be greatly increased, so that a user can more conveniently access network services under the condition of multiple networks, and the use efficiency of a user terminal is greatly improved.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a flow chart of the present invention for updating the address buffer pool of the DNS server;
fig. 3 is a flow chart of a DNS buffer pool address scheduling method of the present invention.
Detailed Description
The invention will be further explained with reference to fig. 1, fig. 2 and fig. 3.
As shown in fig. 1, a method for acquiring a domain name address by multiple networks includes the following steps:
a) and establishing a DNS server address buffer pool.
b) And monitoring the change of the DNS server address of each equipment network card in the Internet, and updating the DNS server address buffer pool according to the change of the DNS server address of each network card.
c) And setting a routing rule according to the updated DNS server address.
d) And each device in the Internet uses a new scheduling mode to perform DNS query.
By reasonably scheduling DNS server addresses corresponding to a plurality of networks and matching with corresponding routing rules, the success rate of domain name query can be greatly increased, so that a user can more conveniently access network services under the condition of multiple networks, and the use efficiency of a user terminal is greatly improved.
Example 1:
as shown in fig. 2, step b) includes the following steps:
b-1) scanning the address of a network card DNS server of each device in the Internet;
b-2) monitoring the address change of each network card DNS server;
b-3) directly adding the DNS server address of the network card with the DNS server address into the DNS server address buffer pool before the DNS server address buffer pool is established;
b-4) adding a network card of the DNS address after the DNS address buffer pool is established, and adding the newly added DNS address into the DNS address buffer pool;
b-5) after the DNS server address buffer pool is established, the network card of the DNS server address is changed, and after the corresponding old DNS server address is deleted, the new DNS server address is added into the DNS server address buffer pool;
b-6) deleting the network card of the DNS address after the DNS address buffer pool is established, and deleting the corresponding DNS address from the DNS address buffer pool.
Example 2:
the step c) comprises the following steps:
c-1) setting routing rules of DNS addresses added in the DNS address buffer pool, so that the communication between the equipment and the DNS addresses is carried out along the original network card path of the equipment.
c-2) deleting the routing rule corresponding to the deleted DNS server address in the DNS server address buffer pool. And ensuring that the routing rule corresponding to the DNS server address of the deleted network card cannot influence the query of other DNS server addresses.
Example 3:
the existing DNS query scheduling mode is as follows: and only the DNS server address of the main network card is used for carrying out domain name query, and the DNS server addresses of other network cards are not used. As long as the first DNS server address of the main network card can be communicated, the standby DSN server address cannot be used even if the domain name address cannot be inquired. As shown in fig. 3, step d) of the present invention comprises the following steps:
d-1) the device uses the address of the DNS server address buffer pool for domain name query. Rather than the DNS server address of the primary network card.
d-2) if the current DNS server address in the DNS server address buffer pool is abnormal during domain name query, sequentially using the next DNS server address in the DNS server address buffer pool to perform domain name query until the equipment acquires the domain name IP address.
Example 4:
preferably, the DNS server address buffer pool in step a) is established earlier or later than the first network connection. The network card in the step b) is a physical network card or a virtual network card. And d-2) the exception is that the communication cannot be carried out or the DNS server address cannot be inquired.
The following is illustrated by a specific example:
network a connects and configures DNS server address a1, establishes a DNS server address buffer pool, and adds a1 to the DNS server address buffer pool. In this case, the state is a single network state, and there is a1 a DNS server address in the DNS server address buffer pool. And configuring a routing rule, and routing the network connection accessing A1 to the network card A.
Network B then connects and configures DNS server address B1, adding B1 to the DNS server address buffer pool. In this case, the DNS server address buffer pool is in a dual network state, and two DNS server addresses a1 and B1 are present. And adding a routing rule, and routing the network connection accessing B1 to the network card B.
Inquiring the domain name C, firstly inquiring A1 in the DNS address buffer pool, and according to the routing rule added in the previous step, inquiring data at this time through the network A. Return normally if a1 queries successfully. If the A1 query fails, continuing to query B1 in the DNS server address buffer pool, and according to the routing rule added in the previous step, the query data goes through the network B. If the B1 query is successful, the return is normal. If the B1 query fails, an attempt is made to continue looking for a new DNS server address in the DNS server address buffer pool, but no other DNS addresses are found, so a failure is returned.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A method for acquiring domain name addresses by multiple networks is characterized by comprising the following steps:
a) establishing a DNS server address buffer pool;
b) monitoring the change of the DNS server address of each equipment network card in the Internet, and updating a DNS server address buffer pool according to the change of the DNS server address of each network card;
c) setting a routing rule according to the updated DNS server address;
d) and each device in the Internet uses a new scheduling mode to perform DNS query.
2. The method for acquiring domain name address in multi-network according to claim 1, wherein step b) comprises the following steps:
b-1) scanning the address of a network card DNS server of each device in the Internet;
b-2) monitoring the address change of each network card DNS server;
b-3) directly adding the DNS server address of the network card with the DNS server address into the DNS server address buffer pool before the DNS server address buffer pool is established;
b-4) adding a network card of the DNS address after the DNS address buffer pool is established, and adding the newly added DNS address into the DNS address buffer pool;
b-5) after the DNS server address buffer pool is established, the network card of the DNS server address is changed, and after the corresponding old DNS server address is deleted, the new DNS server address is added into the DNS server address buffer pool;
b-6) deleting the network card of the DNS address after the DNS address buffer pool is established, and deleting the corresponding DNS address from the DNS address buffer pool.
3. The method for acquiring domain name address in multi-network according to claim 1, wherein step c) comprises the following steps:
c-1) setting routing rules of DNS server addresses added into the DNS server address buffer pool, so that the communication between the equipment and the DNS server addresses is carried out along the original network card path of the equipment;
c-2) deleting the routing rule corresponding to the deleted DNS server address in the DNS server address buffer pool.
4. The method for acquiring domain name address in multi-network according to claim 1, wherein step d) comprises the following steps:
d-1) the equipment uses the address of the DNS address buffer pool to carry out domain name inquiry;
d-2) if the current DNS server address in the DNS server address buffer pool is abnormal during domain name query, sequentially using the next DNS server address in the DNS server address buffer pool to perform domain name query until the equipment acquires the domain name IP address.
5. The method of claim 1, wherein the multi-network obtains the domain name address comprises: the DNS server address buffer pool in the step a) is established earlier than or later than the first network connection.
6. The method of claim 1, wherein the multi-network obtains the domain name address comprises: the network card in the step b) is a physical network card or a virtual network card.
7. The method of claim 1, wherein the multi-network obtains the domain name address comprises: and d-2) the exception is that the communication cannot be carried out or the DNS server address cannot be inquired.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210381492.8A CN114844858A (en) | 2022-04-13 | 2022-04-13 | Method for obtaining domain name address by multiple networks |
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| CN202210381492.8A CN114844858A (en) | 2022-04-13 | 2022-04-13 | Method for obtaining domain name address by multiple networks |
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